Description describeTypedMismatch()

in lib/src/equals_matcher.dart [38:78]

• 40 lines of code
• 8 McCabe index (conditional complexity)

  Description describeTypedMismatch(String item,
      Description mismatchDescription, Map matchState, bool verbose) {
    var buff = StringBuffer();
    buff.write('is different.');
    var escapedItem = escape(item);
    var escapedValue = escape(_value);
    var minLength = escapedItem.length < escapedValue.length
        ? escapedItem.length
        : escapedValue.length;
    var start = 0;
    for (; start < minLength; start++) {
      if (escapedValue.codeUnitAt(start) != escapedItem.codeUnitAt(start)) {
        break;
      }
    }
    if (start == minLength) {
      if (escapedValue.length < escapedItem.length) {
        buff.write(' Both strings start the same, but the actual value also'
            ' has the following trailing characters: ');
        _writeTrailing(buff, escapedItem, escapedValue.length);
      } else {
        buff.write(' Both strings start the same, but the actual value is'
            ' missing the following trailing characters: ');
        _writeTrailing(buff, escapedValue, escapedItem.length);
      }
    } else {
      buff.write('\nExpected: ');
      _writeLeading(buff, escapedValue, start);
      _writeTrailing(buff, escapedValue, start);
      buff.write('\n  Actual: ');
      _writeLeading(buff, escapedItem, start);
      _writeTrailing(buff, escapedItem, start);
      buff.write('\n          ');
      for (var i = start > 10 ? 14 : start; i > 0; i--) {
        buff.write(' ');
      }
      buff.write('^\n Differ at offset $start');
    }

    return mismatchDescription.add(buff.toString());
  }